REFERENCES
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- Knoll, Yousey, Uulbevt, "Visual Thresholds of Steady Point Sources of Light in Fields of Brightness from Dark to Daylight." JOSA, 480 (1946).
- Tousey and Hulbert, "The Visibility of Stars in Daylight Sky." JOSA, 38, 886 (1948).
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- Lamar, Hecht, Schlaer, and Hendley, "Size, Shape and Contrast in Detection of Targets by Daylight Vision," Part I, JOSA 37, 531 (1947); Part II, JOSA, 38, 741 (1948).
- Dunham, Vistas in Astronomy, 2, 1223, Pergamon Press, New York
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- Stebbins and Whitford, Ibid 98, 20 (1944).
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